Spiroloculina orbis Cushman, 1921

Figure 21.18

1921 Spiroloculina orbis Cushman, p. 403, pl. 83, fig. 3.

2009 Spiroloculina orbis Cushman; Devi and Rajashekhar, p. 24, fig. 2j.

2013 Spiroloculina orbis Cushman; Elakkiya and Manivannan, p. 885, fig. 7.4-5.

2014 Spiroloculina orbis Cushman; Gandhi and Nathan, p. 924, pl. 1, fig. 4a.

Description. Test broadly ovate, planispiral, wall porcelaneous, imperforate, surface smooth; final chambers of uniform size overlapping the initial ones; periphery broadly rounded, peripheral margin carinate, sutures distinct, somewhat depressed, slightly arcuate; aperture terminal, round at the end of a carinate neck, bordered by a rim, with a small bifid tooth.